. >>> when nbc nightly news continues this saturday, america at the crossroads, from college campuses to the office. it's not what's missing, it's who's missing. >>> later, making a difference, how one artist who sees a big picture is making kids' dreams come true. >>> all this wiek in our special series "america at a crossroads," we've been looking at how changes at home and across the world are affecting our economy. last night we told you about growing opportunities for women. tonight we want to look at the flip side of that success. the sizeable and growing number of men who show finow find them ill-prepared for the workplace. chelsea barely notices it anymore, but go to almost any college campus in america today, and you'll notice something missing. >> all of my neighbors are girls, all of them are students and girls. getting on a bus, you're surrounded by girls. >> reporter: where did all the men go? once the vast majority, they now make up just 40% of the nation's college students. that can make women at schools like the university of georgia sometimes feel like they go to an a